Click on Appointments by Date in the left control panel. {0.15}

Select the desired date. {0.22}

Select all the checkboxes if you wish to request a review from all the patients. However, if you don't wish to request a review from some patients, you can uncheck their boxes. {0.36}

Click on the Group Message button on the top panel. { 0.38}

Type in the message and click on the send button. {0.49}

On the appointments page you can check if your message is sent successfully or failed due to any reason under the Last Activity column. {0.55}